diff options
| author |   deraadt <deraadt@openbsd.org> | 1998-08-14 21:30:33 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 1998-08-14 21:30:33 +0000 |
| commit | 6ca176693e1bf139badf2a8c4ea9d366e99955a2 (patch) | |
| tree | 5d7a6ba2de3affbd45c8f7cd9048b0ab2626d06e /lib/libpcap/inet.c | |
| parent | fix realloc usage (diff) | |
| download | wireguard-openbsd-6ca176693e1bf139badf2a8c4ea9d366e99955a2.tar.xz wireguard-openbsd-6ca176693e1bf139badf2a8c4ea9d366e99955a2.zip | |
realloc repair
Diffstat (limited to 'lib/libpcap/inet.c')
| -rw-r--r-- | lib/libpcap/inet.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/libpcap/inet.c b/lib/libpcap/inet.c index 6f55b9d4a7b..265dd39c5bd 100644 --- a/lib/libpcap/inet.c +++ b/lib/libpcap/inet.c @@ -1,4 +1,4 @@ -/* $OpenBSD: inet.c,v 1.8 1998/07/14 00:14:01 deraadt Exp $ */ +/* $OpenBSD: inet.c,v 1.9 1998/08/14 21:30:33 deraadt Exp $ */ /* * Copyright (c) 1994, 1995, 1996 @@ -86,7 +86,7 @@ pcap_lookupdev(errbuf) register char *errbuf; { register int fd, minunit, n; - register char *cp, *ibuf = NULL; + register char *cp, *ibuf = NULL, *nibuf; register struct ifreq *ifrp, *ifend, *ifnext, *mp; struct ifconf ifc; struct ifreq ifr; @@ -101,11 +101,14 @@ pcap_lookupdev(errbuf) } while (1) { ifc.ifc_len = len; - ifc.ifc_buf = ibuf = realloc(ibuf, len); - if (ibuf == NULL) { + nibuf = realloc(ibuf, len); + if (nibuf == NULL) { + if (ibuf) + free(ibuf); close(fd); return (NULL); } + ifc.ifc_buf = ibuf = nibuf; if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0) { (void)close(fd); free(ibuf); |